Funny that there's an issue being discussed in the cabal issue tracker right now[1] similar to this. But the report you're giving here is particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which is supported by the claim that base 4.7 isn't available. I'd recommend starting off with running the following commands and pasting the output: ghc --version which ghc cabal --version which cabal [1] https://github.com/haskell/cabal/issues/2438 On Tue, Mar 3, 2015 at 10:21 PM emacstheviking wrote:

Forgot to add that somehow, despite the upgrade, my cabal version has gone backwards from 1.20.0.1 to 1.16.0

WTF?

On 3 March 2015 at 20:19, emacstheviking wrote:

...

I started an OpenGL project within an LTS sandbox as guided on another post and, somewhat foolishly it would see, I did a "cabal install cabal-install" when prompted that a new version was available.

The very next time I tried to work on my code.... I got this:

bash-3.2$ pwd /Users/seancharles/Documents/Coding/haskell/lts1 bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ cabal configure Resolving dependencies... Configuring lts1-0.1.0.0... cabal: At least the following dependencies are missing: base ==4.7.* bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ ls -l total 112 -rw-r--r-- 1 seancharles staff 19 Mar 2 12:53 LICENCSE -rw-r--r-- 1 seancharles staff 552 Mar 3 20:09 Main.hs -rw-r--r-- 1 seancharles staff 477 Mar 3 20:07 Main.hs~ -rw-r--r-- 1 seancharles staff 46 Mar 2 12:52 Setup.hs -rw-r--r-- 1 seancharles staff 30198 Mar 2 12:51 cabal.config -rw-r--r-- 1 seancharles staff 1090 Mar 2 12:51 cabal.sandbox.config drwxr-xr-x 5 seancharles staff 170 Mar 2 12:53 dist -rw-r--r-- 1 seancharles staff 1932 Mar 2 12:52 lts1.cabal bash-3.2$

So, welcome to a different kind of hell, "cabal version hell" perhaps?

Can anybody help me get it running again? Thanks. Sean.

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

I can't really explain the details of what's going on here. It seems that in some cases different versions of the executables are being found, but I don't know why. Wiping out your sandbox (cabal sandbox delete) and starting over may be sufficient to recover. On Wed, Mar 4, 2015 at 11:11 AM emacstheviking wrote:

As requested,

iMac:~ vosabristol$ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.3

which ghc /opt/local/bin/ghc

Hmm.... it shows a macports instsallation of GHC... but I am sure that's how I git it... I *used* to use the OSX installation package but I thought a clean start using MacPorts would somehow change the mood...

iMac:~ vosabristol$ cabal --version cabal-install version 1.16.0.2 using version 1.16.0 of the Cabal library

iMac:~ vosabristol$ which cabal /usr/bin/cabal

So... there is a possible case for *once again* performing a complete and utter removal of Haskell and its partners in crime and doing a fresh installation?

Out of frustration I built OCaml and OPAM from sources last night but I'd still like to go with GHC!

:)

On 3 March 2015 at 20:43, Michael Snoyman wrote:

...

Funny that there's an issue being discussed in the cabal issue tracker right now[1] similar to this. But the report you're giving here is particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which is supported by the claim that base 4.7 isn't available. I'd recommend starting off with running the following commands and pasting the output:

ghc --version which ghc cabal --version which cabal

[1] https://github.com/haskell/cabal/issues/2438

On Tue, Mar 3, 2015 at 10:21 PM emacstheviking wrote:

...

Forgot to add that somehow, despite the upgrade, my cabal version has gone backwards from 1.20.0.1 to 1.16.0

WTF?

On 3 March 2015 at 20:19, emacstheviking wrote:

...

I started an OpenGL project within an LTS sandbox as guided on another post and, somewhat foolishly it would see, I did a "cabal install cabal-install" when prompted that a new version was available.

The very next time I tried to work on my code.... I got this:

bash-3.2$ pwd /Users/seancharles/Documents/Coding/haskell/lts1 bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ cabal configure Resolving dependencies... Configuring lts1-0.1.0.0... cabal: At least the following dependencies are missing: base ==4.7.* bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ ls -l total 112 -rw-r--r-- 1 seancharles staff 19 Mar 2 12:53 LICENCSE -rw-r--r-- 1 seancharles staff 552 Mar 3 20:09 Main.hs -rw-r--r-- 1 seancharles staff 477 Mar 3 20:07 Main.hs~ -rw-r--r-- 1 seancharles staff 46 Mar 2 12:52 Setup.hs -rw-r--r-- 1 seancharles staff 30198 Mar 2 12:51 cabal.config -rw-r--r-- 1 seancharles staff 1090 Mar 2 12:51 cabal.sandbox.config drwxr-xr-x 5 seancharles staff 170 Mar 2 12:53 dist -rw-r--r-- 1 seancharles staff 1932 Mar 2 12:52 lts1.cabal bash-3.2$

So, welcome to a different kind of hell, "cabal version hell" perhaps?

Can anybody help me get it running again? Thanks. Sean.

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

I'd recommend looking at: http://www.stackage.org/install#mac-os-x https://github.com/bitemyapp/learnhaskell/blob/master/README.md#mac-os-x I don't generally recommend using the platform installer, it ends up pegging libraries to old versions which causes dependency problems, or in some cases have known bugs. On Wed, Mar 4, 2015 at 11:26 AM emacstheviking wrote:

Agreed Michael!

I am currently wiping all Mac Ports packages and I will perform a clean up of /Library/Haskell etc.

What is the *preferred* way to get the lastest for OSX: Using homebrew, macports or the Haskell Platform. I *used* to use the platform installer but for some reason (cabal I expect!) I started trying out other ways...

I think actually I will go the platform packager again...

On 4 March 2015 at 09:13, Michael Snoyman wrote:

...

I can't really explain the details of what's going on here. It seems that in some cases different versions of the executables are being found, but I don't know why. Wiping out your sandbox (cabal sandbox delete) and starting over may be sufficient to recover.

On Wed, Mar 4, 2015 at 11:11 AM emacstheviking wrote:

...

As requested,

iMac:~ vosabristol$ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.3

which ghc /opt/local/bin/ghc

Hmm.... it shows a macports instsallation of GHC... but I am sure that's how I git it... I *used* to use the OSX installation package but I thought a clean start using MacPorts would somehow change the mood...

iMac:~ vosabristol$ cabal --version cabal-install version 1.16.0.2 using version 1.16.0 of the Cabal library

iMac:~ vosabristol$ which cabal /usr/bin/cabal

So... there is a possible case for *once again* performing a complete and utter removal of Haskell and its partners in crime and doing a fresh installation?

Out of frustration I built OCaml and OPAM from sources last night but I'd still like to go with GHC!

:)

On 3 March 2015 at 20:43, Michael Snoyman wrote:

...

Funny that there's an issue being discussed in the cabal issue tracker right now[1] similar to this. But the report you're giving here is particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which is supported by the claim that base 4.7 isn't available. I'd recommend starting off with running the following commands and pasting the output:

ghc --version which ghc cabal --version which cabal

[1] https://github.com/haskell/cabal/issues/2438

On Tue, Mar 3, 2015 at 10:21 PM emacstheviking wrote:

...

Forgot to add that somehow, despite the upgrade, my cabal version has gone backwards from 1.20.0.1 to 1.16.0

WTF?

On 3 March 2015 at 20:19, emacstheviking wrote:

...

I started an OpenGL project within an LTS sandbox as guided on another post and, somewhat foolishly it would see, I did a "cabal install cabal-install" when prompted that a new version was available.

The very next time I tried to work on my code.... I got this:

bash-3.2$ pwd /Users/seancharles/Documents/Coding/haskell/lts1 bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ cabal configure Resolving dependencies... Configuring lts1-0.1.0.0... cabal: At least the following dependencies are missing: base ==4.7.* bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ ls -l total 112 -rw-r--r-- 1 seancharles staff 19 Mar 2 12:53 LICENCSE -rw-r--r-- 1 seancharles staff 552 Mar 3 20:09 Main.hs -rw-r--r-- 1 seancharles staff 477 Mar 3 20:07 Main.hs~ -rw-r--r-- 1 seancharles staff 46 Mar 2 12:52 Setup.hs -rw-r--r-- 1 seancharles staff 30198 Mar 2 12:51 cabal.config -rw-r--r-- 1 seancharles staff 1090 Mar 2 12:51 cabal.sandbox.config drwxr-xr-x 5 seancharles staff 170 Mar 2 12:53 dist -rw-r--r-- 1 seancharles staff 1932 Mar 2 12:52 lts1.cabal bash-3.2$

So, welcome to a different kind of hell, "cabal version hell" perhaps?

Can anybody help me get it running again? Thanks. Sean.

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

Hey, Little addition to what Michael already sent you. To get ‘the latest’ you should build from sources :D But in case it’s ok for you to have ghc 7.8.3 and you don’t want to ./configure; make; make install, you might also check this installation script on github. On March 4, 2015 at 11:28:50, Michael Snoyman (michael@snoyman.com) wrote: I'd recommend looking at: http://www.stackage.org/install#mac-os-x https://github.com/bitemyapp/learnhaskell/blob/master/README.md#mac-os-x I don't generally recommend using the platform installer, it ends up pegging libraries to old versions which causes dependency problems, or in some cases have known bugs. On Wed, Mar 4, 2015 at 11:26 AM emacstheviking wrote: Agreed Michael! I am currently wiping all Mac Ports packages and I will perform a clean up of /Library/Haskell etc. What is the *preferred* way to get the lastest for OSX: Using homebrew, macports or the Haskell Platform. I *used* to use the platform installer but for some reason (cabal I expect!) I started trying out other ways... I think actually I will go the platform packager again... On 4 March 2015 at 09:13, Michael Snoyman wrote: I can't really explain the details of what's going on here. It seems that in some cases different versions of the executables are being found, but I don't know why. Wiping out your sandbox (cabal sandbox delete) and starting over may be sufficient to recover. On Wed, Mar 4, 2015 at 11:11 AM emacstheviking wrote: As requested, iMac:~ vosabristol$ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.3 which ghc /opt/local/bin/ghc Hmm.... it shows a macports instsallation of GHC... but I am sure that's how I git it... I *used* to use the OSX installation package but I thought a clean start using MacPorts would somehow change the mood... iMac:~ vosabristol$ cabal --version cabal-install version 1.16.0.2 using version 1.16.0 of the Cabal library iMac:~ vosabristol$ which cabal /usr/bin/cabal So... there is a possible case for *once again* performing a complete and utter removal of Haskell and its partners in crime and doing a fresh installation? Out of frustration I built OCaml and OPAM from sources last night but I'd still like to go with GHC! :) On 3 March 2015 at 20:43, Michael Snoyman wrote: Funny that there's an issue being discussed in the cabal issue tracker right now[1] similar to this. But the report you're giving here is particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which is supported by the claim that base 4.7 isn't available. I'd recommend starting off with running the following commands and pasting the output: ghc --version which ghc cabal --version which cabal [1] https://github.com/haskell/cabal/issues/2438 On Tue, Mar 3, 2015 at 10:21 PM emacstheviking wrote: Forgot to add that somehow, despite the upgrade, my cabal version has gone backwards from 1.20.0.1 to 1.16.0 WTF? On 3 March 2015 at 20:19, emacstheviking wrote: I started an OpenGL project within an LTS sandbox as guided on another post and, somewhat foolishly it would see, I did a "cabal install cabal-install" when prompted that a new version was available. The very next time I tried to work on my code.... I got this: bash-3.2$ pwd /Users/seancharles/Documents/Coding/haskell/lts1 bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ cabal configure Resolving dependencies... Configuring lts1-0.1.0.0... cabal: At least the following dependencies are missing: base ==4.7.* bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ ls -l total 112 -rw-r--r--  1 seancharles  staff     19 Mar  2 12:53 LICENCSE -rw-r--r--  1 seancharles  staff    552 Mar  3 20:09 Main.hs -rw-r--r--  1 seancharles  staff    477 Mar  3 20:07 Main.hs~ -rw-r--r--  1 seancharles  staff     46 Mar  2 12:52 Setup.hs -rw-r--r--  1 seancharles  staff  30198 Mar  2 12:51 cabal.config -rw-r--r--  1 seancharles  staff   1090 Mar  2 12:51 cabal.sandbox.config drwxr-xr-x  5 seancharles  staff    170 Mar  2 12:53 dist -rw-r--r--  1 seancharles  staff   1932 Mar  2 12:52 lts1.cabal bash-3.2$  So, welcome to a different kind of hell, "cabal version hell" perhaps? Can anybody help me get it running again? Thanks. Sean. _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

Well, I have port installed 7.8.3 as it needs an existing GHC, then I unpacked 7.8.4 from tarball and............... checking whether bootstrap compiler is affected by bug 9439... You are using a new version of LLVM that hasn't been tested yet! We will try though... /var/folders/15/fqzwrj1n32gfgx8yy5t8v1bc0000gq/T/ghc7339_0/ghc7339_6.s:3:2: error: unknown directive .macosx_version_min 10, 0 ^ <no location info>: Error running clang! you need clang installed to use theLLVM backend (or GHC tried to execute clang incorrectly) failed to compile Is that a problem??? It seems to have run the configure script just fine for all of that. On 4 March 2015 at 10:45, emacstheviking wrote:

I am a 30+ years hacker Boris, building from source might just tempt me still!! HAHAHA My machine is now "clean" so I will decide how to play it!

Thanks again everybody.

On 4 March 2015 at 09:31, Boris wrote:

...

Hey,

Little addition to what Michael already sent you.

To get ‘the latest’ you should build from sources :D

But in case it’s ok for you to have ghc 7.8.3 and you don’t want to ./configure; make; make install, you might also check this installation script on github https://github.com/yogsototh/install-haskell.

On March 4, 2015 at 11:28:50, Michael Snoyman (michael@snoyman.com) wrote:

I'd recommend looking at:

http://www.stackage.org/install#mac-os-x https://github.com/bitemyapp/learnhaskell/blob/master/README.md#mac-os-x

I don't generally recommend using the platform installer, it ends up pegging libraries to old versions which causes dependency problems, or in some cases have known bugs.

On Wed, Mar 4, 2015 at 11:26 AM emacstheviking wrote:

...

Agreed Michael!

I am currently wiping all Mac Ports packages and I will perform a clean up of /Library/Haskell etc.

What is the *preferred* way to get the lastest for OSX: Using homebrew, macports or the Haskell Platform. I *used* to use the platform installer but for some reason (cabal I expect!) I started trying out other ways...

I think actually I will go the platform packager again...

On 4 March 2015 at 09:13, Michael Snoyman wrote:

...

I can't really explain the details of what's going on here. It seems that in some cases different versions of the executables are being found, but I don't know why. Wiping out your sandbox (cabal sandbox delete) and starting over may be sufficient to recover.

On Wed, Mar 4, 2015 at 11:11 AM emacstheviking wrote:

...

As requested,

iMac:~ vosabristol$ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.3

which ghc /opt/local/bin/ghc

Hmm.... it shows a macports instsallation of GHC... but I am sure that's how I git it... I *used* to use the OSX installation package but I thought a clean start using MacPorts would somehow change the mood...

iMac:~ vosabristol$ cabal --version cabal-install version 1.16.0.2 using version 1.16.0 of the Cabal library

iMac:~ vosabristol$ which cabal /usr/bin/cabal

So... there is a possible case for *once again* performing a complete and utter removal of Haskell and its partners in crime and doing a fresh installation?

Out of frustration I built OCaml and OPAM from sources last night but I'd still like to go with GHC!

:)

On 3 March 2015 at 20:43, Michael Snoyman wrote:

...

Funny that there's an issue being discussed in the cabal issue tracker right now[1] similar to this. But the report you're giving here is particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which is supported by the claim that base 4.7 isn't available. I'd recommend starting off with running the following commands and pasting the output:

ghc --version which ghc cabal --version which cabal

[1] https://github.com/haskell/cabal/issues/2438

On Tue, Mar 3, 2015 at 10:21 PM emacstheviking wrote:

> Forgot to add that somehow, despite the upgrade, my cabal version > has gone backwards from 1.20.0.1 to 1.16.0 > > WTF? > > > On 3 March 2015 at 20:19, emacstheviking wrote: > >> I started an OpenGL project within an LTS sandbox as guided on >> another post and, somewhat foolishly it would see, I did a "cabal install >> cabal-install" when prompted that a new version was available. >> >> The very next time I tried to work on my code.... I got this: >> >> bash-3.2$ pwd >> /Users/seancharles/Documents/Coding/haskell/lts1 >> bash-3.2$ cabal build >> cabal: You need to re-run the 'configure' command. The version of >> Cabal being >> used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). >> bash-3.2$ cabal configure >> Resolving dependencies... >> Configuring lts1-0.1.0.0... >> cabal: At least the following dependencies are missing: >> base ==4.7.* >> bash-3.2$ cabal build >> cabal: You need to re-run the 'configure' command. The version of >> Cabal being >> used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). >> bash-3.2$ ls -l >> total 112 >> -rw-r--r-- 1 seancharles staff 19 Mar 2 12:53 LICENCSE >> -rw-r--r-- 1 seancharles staff 552 Mar 3 20:09 Main.hs >> -rw-r--r-- 1 seancharles staff 477 Mar 3 20:07 Main.hs~ >> -rw-r--r-- 1 seancharles staff 46 Mar 2 12:52 Setup.hs >> -rw-r--r-- 1 seancharles staff 30198 Mar 2 12:51 cabal.config >> -rw-r--r-- 1 seancharles staff 1090 Mar 2 12:51 >> cabal.sandbox.config >> drwxr-xr-x 5 seancharles staff 170 Mar 2 12:53 dist >> -rw-r--r-- 1 seancharles staff 1932 Mar 2 12:52 lts1.cabal >> bash-3.2$ >> >> So, welcome to a different kind of hell, "cabal version hell" >> perhaps? >> >> Can anybody help me get it running again? >> Thanks. >> Sean. >> >> > _______________________________________________ > Beginners mailing list > Beginners@haskell.org > http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners >

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

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Have you installed xcode command-line tools? And what which clang returns? On March 4, 2015 at 13:26:14, emacstheviking (objitsu@gmail.com) wrote: Forgot this: ---------------------------------------------------------------------- Configure completed successfully.    Building GHC version  : 7.8.4    Build platform        : x86_64-apple-darwin    Host platform         : x86_64-apple-darwin    Target platform       : x86_64-apple-darwin    Bootstrapping using   : /opt/local/bin/ghc       which is version   : 7.8.3    Using clang               : /usr/bin/gcc       which is version       : 6.0    Building a cross compiler : NO    cpp       : /usr/bin/gcc    cpp-flags : -E -undef -traditional -Wno-invalid-pp-token -Wno-unicode -Wno-trigraphs    ld        : /opt/local/bin/ld    Happy     :  ()    Alex      :  ()    Perl      : /opt/local/bin/perl    dblatex   :    xsltproc  : /opt/local/bin/xsltproc    Using LLVM tools       llc   :       opt   :    HsColour : /opt/local/bin/HsColour    Building DocBook HTML documentation : YES    Building DocBook PS documentation   : NO    Building DocBook PDF documentation  : NO ---------------------------------------------------------------------- On 4 March 2015 at 11:24, emacstheviking wrote: Well, I have port installed 7.8.3 as it needs an existing GHC, then I unpacked 7.8.4 from tarball and............... checking whether bootstrap compiler is affected by bug 9439... You are using a new version of LLVM that hasn't been tested yet! We will try though... /var/folders/15/fqzwrj1n32gfgx8yy5t8v1bc0000gq/T/ghc7339_0/ghc7339_6.s:3:2:      error: unknown directive             .macosx_version_min 10, 0             ^ <no location info>:     Error running clang! you need clang installed to use theLLVM backend     (or GHC tried to execute clang incorrectly) failed to compile Is that a problem??? It seems to have run the configure script just fine for all of that. On 4 March 2015 at 10:45, emacstheviking wrote: I am a 30+ years hacker Boris, building from source might just tempt me still!! HAHAHA My machine is now "clean" so I will decide how to play it! Thanks again everybody. On 4 March 2015 at 09:31, Boris wrote: Hey, Little addition to what Michael already sent you. To get ‘the latest’ you should build from sources :D But in case it’s ok for you to have ghc 7.8.3 and you don’t want to ./configure; make; make install, you might also check this installation script on github. On March 4, 2015 at 11:28:50, Michael Snoyman (michael@snoyman.com) wrote: I'd recommend looking at: http://www.stackage.org/install#mac-os-x https://github.com/bitemyapp/learnhaskell/blob/master/README.md#mac-os-x I don't generally recommend using the platform installer, it ends up pegging libraries to old versions which causes dependency problems, or in some cases have known bugs. On Wed, Mar 4, 2015 at 11:26 AM emacstheviking wrote: Agreed Michael! I am currently wiping all Mac Ports packages and I will perform a clean up of /Library/Haskell etc. What is the *preferred* way to get the lastest for OSX: Using homebrew, macports or the Haskell Platform. I *used* to use the platform installer but for some reason (cabal I expect!) I started trying out other ways... I think actually I will go the platform packager again... On 4 March 2015 at 09:13, Michael Snoyman wrote: I can't really explain the details of what's going on here. It seems that in some cases different versions of the executables are being found, but I don't know why. Wiping out your sandbox (cabal sandbox delete) and starting over may be sufficient to recover. On Wed, Mar 4, 2015 at 11:11 AM emacstheviking wrote: As requested, iMac:~ vosabristol$ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.3 which ghc /opt/local/bin/ghc Hmm.... it shows a macports instsallation of GHC... but I am sure that's how I git it... I *used* to use the OSX installation package but I thought a clean start using MacPorts would somehow change the mood... iMac:~ vosabristol$ cabal --version cabal-install version 1.16.0.2 using version 1.16.0 of the Cabal library iMac:~ vosabristol$ which cabal /usr/bin/cabal So... there is a possible case for *once again* performing a complete and utter removal of Haskell and its partners in crime and doing a fresh installation? Out of frustration I built OCaml and OPAM from sources last night but I'd still like to go with GHC! :) On 3 March 2015 at 20:43, Michael Snoyman wrote: Funny that there's an issue being discussed in the cabal issue tracker right now[1] similar to this. But the report you're giving here is particularly strange. Cabal-1.16 implies that you're using GHC 7.6, which is supported by the claim that base 4.7 isn't available. I'd recommend starting off with running the following commands and pasting the output: ghc --version which ghc cabal --version which cabal [1] https://github.com/haskell/cabal/issues/2438 On Tue, Mar 3, 2015 at 10:21 PM emacstheviking wrote: Forgot to add that somehow, despite the upgrade, my cabal version has gone backwards from 1.20.0.1 to 1.16.0 WTF? On 3 March 2015 at 20:19, emacstheviking wrote: I started an OpenGL project within an LTS sandbox as guided on another post and, somewhat foolishly it would see, I did a "cabal install cabal-install" when prompted that a new version was available. The very next time I tried to work on my code.... I got this: bash-3.2$ pwd /Users/seancharles/Documents/Coding/haskell/lts1 bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ cabal configure Resolving dependencies... Configuring lts1-0.1.0.0... cabal: At least the following dependencies are missing: base ==4.7.* bash-3.2$ cabal build cabal: You need to re-run the 'configure' command. The version of Cabal being used has changed (was Cabal-1.20.0.1, now Cabal-1.16.0). bash-3.2$ ls -l total 112 -rw-r--r--  1 seancharles  staff     19 Mar  2 12:53 LICENCSE -rw-r--r--  1 seancharles  staff    552 Mar  3 20:09 Main.hs -rw-r--r--  1 seancharles  staff    477 Mar  3 20:07 Main.hs~ -rw-r--r--  1 seancharles  staff     46 Mar  2 12:52 Setup.hs -rw-r--r--  1 seancharles  staff  30198 Mar  2 12:51 cabal.config -rw-r--r--  1 seancharles  staff   1090 Mar  2 12:51 cabal.sandbox.config drwxr-xr-x  5 seancharles  staff    170 Mar  2 12:53 dist -rw-r--r--  1 seancharles  staff   1932 Mar  2 12:52 lts1.cabal bash-3.2$  So, welcome to a different kind of hell, "cabal version hell" perhaps? Can anybody help me get it running again? Thanks. Sean. _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

On Wed, Mar 4, 2015 at 4:32 PM Brandon Allbery wrote:

On Wed, Mar 4, 2015 at 4:25 AM, emacstheviking wrote:

...

What is the *preferred* way to get the lastest for OSX: Using homebrew, macports or the Haskell Platform. I *used* to use the platform installer but for some reason (cabal I expect!) I started trying out other ways...

Depends on who you ask. I use MacPorts and keep it updated, but please-root-me (aka Homebrew) is preferred by most people these days. You will find people arguing that you should use the Platform and people who insist you should always install just ghc and cabal, or people who insist you shouldn't ever look beyond Stackage (great if Stackage bothers to acknowledge that the library you need exists).

Just to clarify, because there seems to be some confusion in your comments on Stackage. When someone sets up a project to use Stackage[1], you still have full access to all packages on Hackage, there just isn't any way to be certain the packages will compile reliably (which is the case with installing from Hackage as well). And getting a package into Stackage is a simple, open procedure[2] which anyone is allowed to participate in. In other words: Stackage acknowledges the existence of every package on Hackage, and can provide build guarantees for any package that is added to its build-constraints file. [1] Minimal procedure: run `wget http://www.stackage.org/lts/cabal.config` [2] https://github.com/fpco/stackage#get-your-package-included

Yes. On Wed, Mar 4, 2015, 6:10 PM emacstheviking wrote:

OK, having installed it, am I now at liberty to use the LTS instructions to once again attempt to start an OpenGL project?

On 4 March 2015 at 15:31, Michael Snoyman wrote:

...

On Wed, Mar 4, 2015 at 4:32 PM Brandon Allbery wrote:

...

On Wed, Mar 4, 2015 at 4:25 AM, emacstheviking wrote:

...

What is the *preferred* way to get the lastest for OSX: Using homebrew, macports or the Haskell Platform. I *used* to use the platform installer but for some reason (cabal I expect!) I started trying out other ways...

Depends on who you ask. I use MacPorts and keep it updated, but please-root-me (aka Homebrew) is preferred by most people these days. You will find people arguing that you should use the Platform and people who insist you should always install just ghc and cabal, or people who insist you shouldn't ever look beyond Stackage (great if Stackage bothers to acknowledge that the library you need exists).

Just to clarify, because there seems to be some confusion in your comments on Stackage. When someone sets up a project to use Stackage[1], you still have full access to all packages on Hackage, there just isn't any way to be certain the packages will compile reliably (which is the case with installing from Hackage as well). And getting a package into Stackage is a simple, open procedure[2] which anyone is allowed to participate in.

In other words: Stackage acknowledges the existence of every package on Hackage, and can provide build guarantees for any package that is added to its build-constraints file.

[1] Minimal procedure: run `wget http://www.stackage.org/lts/cabal.config` http://www.stackage.org/lts/cabal.config [2] https://github.com/fpco/stackage#get-your-package-included

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